/*
 * Copyright (C) 2009,2010 University of Paderborn, Computer Networks Group
 * Copyright (C) 2009,2010 Christian Dannewitz <christian.dannewitz@upb.de>
 * Copyright (C) 2009,2010 Thorsten Biermann <thorsten.biermann@upb.de>
 * 
 * Copyright (C) 2009,2010 Eduard Bauer <edebauer@mail.upb.de>
 * Copyright (C) 2009,2010 Matthias Becker <matzeb@mail.upb.de>
 * Copyright (C) 2009,2010 Frederic Beister <azamir@zitmail.uni-paderborn.de>
 * Copyright (C) 2009,2010 Nadine Dertmann <ndertmann@gmx.de>
 * Copyright (C) 2009,2010 Michael Kionka <mkionka@mail.upb.de>
 * Copyright (C) 2009,2010 Mario Mohr <mmohr@mail.upb.de>
 * Copyright (C) 2009,2010 Felix Steffen <felix.steffen@gmx.de>
 * Copyright (C) 2009,2010 Sebastian Stey <sebstey@mail.upb.de>
 * Copyright (C) 2009,2010 Steffen Weber <stwe@mail.upb.de>
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the University of Paderborn nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package netinf.node.search.esfconnector;

import java.util.List;

import netinf.common.datamodel.DatamodelFactory;
import netinf.common.datamodel.identity.ResolutionServiceIdentityObject;
import netinf.common.eventservice.AbstractEsfConnector;
import netinf.common.eventservice.AbstractMessageProcessor;
import netinf.common.eventservice.MessageReceiver;
import netinf.node.resolution.ResolutionController;
import netinf.node.search.rdf.SearchServiceRDF;

import org.apache.log4j.Logger;

import com.google.inject.Inject;
import com.google.inject.name.Named;

/**
 * Connects the {@link SearchServiceRDF} with an event service. The search service respectively this connector subscribes on
 * specific IO changes.
 * 
 * @author PG Augnet 2, University of Paderborn
 * @see AbstractEsfConnector
 * @see SearchEsfMessageProcessor
 * @see MessageReceiver
 */
public class SearchEsfConnector extends AbstractEsfConnector {

   protected static final Logger LOG = Logger.getLogger(SearchEsfConnector.class);

   private final ResolutionController resController;

   @Inject
   public SearchEsfConnector(final DatamodelFactory dmFactory, final MessageReceiver receiveHandler,
         final AbstractMessageProcessor procHandler, @Named("search_rdf_esf_host") final String host,
         @Named("search_rdf_esf_port") final String port, final ResolutionController resController) {
      super(dmFactory, receiveHandler, procHandler, host, port);
      this.resController = resController;
   }

   @Override
   protected boolean systemReadyToHandleReceivedMessage() {
      // look for existence of rdf rs since it is needed to store the received data
      int count = 0;
      List<ResolutionServiceIdentityObject> installedRSList = resController.getResolutionServices();
      for (ResolutionServiceIdentityObject rsIdO : installedRSList) {
         if (rsIdO.getName().equals("RDFResolutionService")) {
            count++;
         }
      }
      if (count == 0) {
         LOG.error("Can not find any registered 'RDFResolutionService' where the received data could be stored");
         return false;
      }
      return true;
   }

}
